1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year > 1966 Shelby
Anyone have carb ID pictures
Drew Pojedinec:
The pump override spring screw is like the later photos of yours. The long screw and nut is a later reproduction.
Not meaning to be picky, be the forum is about concours work
Dan Case:
I would not expect a 1963-64 brass spark vacuum plug in that 1966 time period. Plated steel in the same design would be what I expected.
J_Speegle:
--- Quote from: Drew Pojedinec on April 04, 2023, 09:07:51 AM ---The pump override spring screw is like the later photos of yours. The long screw and nut is a later reproduction.
Not meaning to be picky, be the forum is about concours work
--- End quote ---
Drew - not a problem at all. The pictures point out how many little things can turn up being replaced and altered over the years as well as open discussions. We can all learn things and discover new ones through the process. In ways it makes it better than showing what is currently believed to be correct and just copying the details.
J_Speegle:
Highlighted details in my earlier pictures to hopefully help.
Dan to tell the finish in may of the pictures I have when it comes to the vacuum plug. No rust on any of them in the 66's I looked at and a few of them might be brass due to the screw driver damage. Will keep an eye open for more examples in better original condition and cleanliness
Dan Case:
--- Quote from: J_Speegle on April 04, 2023, 05:28:34 PM ---Highlighted details in my earlier pictures to hopefully help.
Dan to tell the finish in may of the pictures I have when it comes to the vacuum plug. No rust on any of them in the 66's I looked at and a few of them might be brass due to the screw driver damage. Will keep an eye open for more examples in better original condition and cleanliness
--- End quote ---
Could be rusty steel, I have seen that. The only brass plug I have in my data base for any engineering version of "3259" was the prototypes produced in 1964 in between the time the original plan was to use R-2668A models and when some R-2668As were reworked by Holley into prototype "R-3259" units. (There appears to be a date stamp on the document calling out "Holley No. 2668" but it is too faint to read. The only known surviving prototype was manufactured as a R-2668A in April 1964. When was it converted is anyone's guess unless somebody has the factory log book still. The release to produce R-3259A versions, only made in December 1964, was date stamped December 2, 1964.)
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